Perhaps you’ve been hesitant to use a porta potty at a music festival, but you could be missing out.

The Sziget Festival in Hungary (which ran from August 9 to August 16) featured a mobile toilet which was really the secret entrance to a dance party, according to UPI.

“This is why I love Sziget,” wrote one fan who captured video of the unique entry. “Just open a random toilet and there is a secret party going on.”

Rave World also shared video from the festival, writing: “When you go to the toilet, but you discover a secret RAVE !!!”